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Conferences > NLO > 2011 > NThD > NThD5

Highly Efficient Optical Gain Media Based on Thick-Shell CdSe/CdS Nanocrystals with Suppressed Auger Recombination

F. García-Santamaría, S. Brovelli, R. Viswanatha, J. A. Hollingsworth, H. Htoon, S. A. Crooker, and V. I. Klimov

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Abstract

Orders-of-magnitude suppression of Auger decay rates in thick-shell CdSe/CdS nanocrystal quantum dots derives primarily from “smoothing” of the confinement potential within the interfacial alloy layer. These nanocrystals show strong optical gain with an extraordinarily large bandwidth (>500 meV) due to involvement of multiexcitons of very high (>10) orders.

© 2011 Optical Society of America

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